Home / 724,417.48-999,646.12-402,102.20

Finding the Fourth Proportional to 724,417.48, 999,646.12 and 402,102.20

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Solution

The fourth proportional to 724,417.48, 999,646.12 and 402,102.20 is: 554,873.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,417.48 : 999,646.12 = 402,102.20 : x
  2. Step 2: Convert to fraction form
    724,417.48/999,646.12 = 402,102.20/x
  3. Step 3: Cross multiply
    724,417.48x = 999,646.12 × 402,102.20
  4. Step 4: Simplify right side
    724,417.48x = 401,959,905,567.32
  5. Step 5: Solve for x
    x = 401,959,905,567.32/724,417.48
  6. Step 6: Final answer
    x = 554,873.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.